here is my Hackvent write-up. It was a really good CTF, but there was a really dump challenges. It was a challenge, where you called a number in switzerland. Also you needed a provider, who fakes the displaynumber of your calls. At the end I spend about 30€ to solve that challenge. If you want to try it by yourself, you can do it here. Remember, every try costs you round about 50 cent or something like this and calling robots are not so fast in the answer, like webservers ;)

Here is my Hackvent 2015 WriteUp. Like the Hackyeaster 2015 WriteUp, it is quick and dirty, so there are maybe some spelling mistakes and also the layout sucks. If you want to try a challenge by yourself, pass me a message and I send it to you.

Enjoy the WriteUp. It was a quick and dirty WriteUp, so there are maybe some spelling mistakes and the layout sucks. If you want to try out some of the challenges yourself, pass me a message and I will send them you.